Built-In Electric Field in High Quality GaN/AlGaN Quantum Wells

Strain induced variations in band offsets and built-in electric fields in InGaN/GaN multiple quantum wells

in InGaN/GaN multiple quantum wells L. Dong, J. V. Mantese, V. Avrutin, € U. € Ozg€ ur, H. Morkoç, and S. P. Alpay Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA United Technology Research Center, East Hartford, Connecticut 06108, USA Department of Electrical and Computer Engineering, Virginia Commonwealth University, Richmond, Virginia 23284-3072, USA Departme...

Built-in electric field minimization in (In, Ga)N nanoheterostructures.

(In, Ga)N nanostructures show great promise as the basis for next generation LED lighting technology, for they offer the possibility of directly converting electrical energy into light of any visible wavelength without the use of down-converting phosphors. In this paper, three-dimensional computation of the spatial distribution of the mechanical and electrical equilibrium in nanoheterostructure...

Electronic spectrum of quantum-d-wells superlattices in an electric field

We study one-dimensional periodic chains of quantum d wells, centering our attention on the properties of the electronic spectrum in the presence of an electric field. We study the field dependence of the quasibound and resonant states of the system, which we define clearly. The spectrum, whose absolute behavior depends on the symmetry of the potential, is universal if an appropriate origin of ...

Electric-field dependence of luminescence spectra of (In,Ga)N/GaN LEDs containing quantum wells

Conversion of spin into directed electric current in quantum wells.

A nonequilibrium population of spin-up and spin-down states in quantum well structures has been achieved applying circularly polarized radiation. The spin polarization results in a directed motion of free carriers in the plane of a quantum well perpendicular to the direction of light propagation. Because of the spin selection rules the direction of the current is determined by the helicity of t...